Engine Control System [service Information] Toyota Prius V I

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ON-VEHICLE INSPECTION

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1). Check the engine speed while operating the camshaft timing oil control valve assembly using the Techstream. Standard Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: If the result is not acceptable, cool the engine (engine coolant temperature is 50°C (122°F) or less) and perform the Active Test again. Test not possible with park (P) selected during charge control. Move shift lever to N to perform test.

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1. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 22»(/toyota/prius-v/i-2011-2014/remont/mechanical/#engine-mechanical-service-information)
2. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Disconnect the camshaft timing oil control valve assembly connector. Remove the bolt and camshaft timing oil control valve assembly. Remove the O-ring from the camshaft timing oil control valve assembly.

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1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms If the result is not as specified, replace the oil control valve assembly. Check the operation. Connect a positive (+) auxiliary battery lead to terminal 1 and a negative (-) lead to terminal 2, and check the movement of the valve. TEXT IN ILLUSTRATION *a Voltage applied *b Voltage not applied NOTE: Confirm that the valve moves freely and does not stick in any position. If necessary, replace the camshaft timing oil control valve assembly. HINT: Accumulation of foreign matter can cause minor pressure leaks. Minor pressure leaks will cause the camshaft to advance or retard, and this will cause a DTC to be stored.

INSTALLATION

1. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Apply a light coat of engine oil to a new O-ring and install it onto the camshaft timing oil control valve assembly. NOTE: Do not twist the O-ring. Install the camshaft timing oil control valve assembly with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the camshaft timing oil control valve assembly connector.
2. INSPECT FOR OIL LEAK
3. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 100»(/toyota/prius-v/i-2011-2014/remont/mechanical/#engine-mechanical-service-information)

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1. INSPECT THROTTLE BODY ASSEMBLY Set the vehicle to inspection mode. Refer to «INSPECTION MODE PROCEDURE»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction) . Start the engine and check that the MIL is not illuminated. After the engine is warmed up, check that the idle speed is within the specified range when the A/C is switched off. Standard Condition Engine Idle Speed A/C switched off 950 to 1050 RPM NOTE: Be sure to perform this step with all accessories off. Make sure that park (P) is selected.

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1. DRAIN ENGINE COOLANT (for Engine) . Refer to «REPLACEMENT - Step 1»(/toyota/prius-v/i-2011-2014/remont/cooling-fan/#engine-cooling-system-service-information)
2. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 22»(/toyota/prius-v/i-2011-2014/remont/mechanical/#engine-mechanical-service-information)
3. REMOVE AIR CLEANER CAP SUB-ASSEMBLY Disconnect the mass air flow meter connector. Release the 2 clamps. Loosen the hose clamp and remove the air cleaner cap sub-assembly.
4. REMOVE AIR CLEANER INLET ASSEMBLY Separate the water hose from the hose clamp. Separate the wire harness clamp from the air cleaner inlet assembly. Remove the 3 bolts and air cleaner inlet assembly.
5. REMOVE AIR CLEANER CASE Remove the air cleaner filter element sub-assembly. Separate the water hose from the 3 hose clamps. Remove the 3 bolts and air cleaner case.
6. REMOVE AIR CLEANER HOSE ASSEMBLY Loosen the hose clamp and separate the ventilation hose. Unlock the hose clamp and remove the air cleaner hose assembly.
7. REMOVE THROTTLE BODY ASSEMBLY Disconnect the throttle body connector and 2 water by-pass hoses. Remove the 2 bolts, 2 nuts and throttle body assembly. Remove the gasket from the intake manifold.

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1. INSPECT THROTTLE BODY ASSEMBLY Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *a Component without harness connected (Throttle Body Assembly) Standard Resistance Tester Connection Condition Specified Condition 1 (M-) - 2 (M+) 20°C (68°F) 0.3 to 100 ohms If the result is not as specified, replace the throttle body assembly.

1. INSTALL THROTTLE BODY ASSEMBLY Install a new gasket onto the intake manifold. Install the throttle body assembly with the 2 bolts and 2 nuts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the 2 water by-pass hoses and throttle body connector.
2. INSTALL AIR CLEANER HOSE ASSEMBLY Install the air cleaner hose assembly and lock the hose clamp. Connect the ventilation hose.
3. INSTALL AIR CLEANER CASE Install the air cleaner case with the 3 bolts. Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf) Install the water hose to the 3 hose clamps. Install the air cleaner filter element sub-assembly.
4. INSTALL AIR CLEANER INLET ASSEMBLY Install the air cleaner inlet assembly to the air cleaner case. Install the air cleaner inlet assembly with the 3 bolts. Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf) Connect the wire harness clamp to the air cleaner inlet assembly. Install the water hose to the hose clamp.
5. INSTALL AIR CLEANER CAP SUB-ASSEMBLY Install the air cleaner cap sub-assembly with the 2 clamps. Tighten the hose clamp. Connect the mass air flow meter connector.
6. ADD ENGINE COOLANT (for Engine) . Refer to «REPLACEMENT - Step 2»(/toyota/prius-v/i-2011-2014/remont/cooling-fan/#engine-cooling-system-service-information)
7. INSPECT FOR COOLANT LEAK (for Engine) . Refer to «ON-VEHICLE INSPECTION - Step 1»(/toyota/prius-v/i-2011-2014/remont/cooling-system-mechanical/#engine-cooling-system-inspection)
8. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 100»(/toyota/prius-v/i-2011-2014/remont/mechanical/#engine-mechanical-service-information)
9. PERFORM INITIALIZATION NOTE: Be sure to perform this procedure after reassembling the throttle body assembly, removing and reinstalling any throttle body component or replacing the ECM. Disconnect the cable from the negative (-) auxiliary battery terminal. Wait at least 60 seconds and reconnect the cable. Connect the Techstream to the DLC3 and clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/prius-v/i-2011-2014/remont/testing-diagnostics/#engine-control-system-diagnostics-introduction__dtc-check-clear) . Set the vehicle to inspection mode. Refer to «INSPECTION MODE PROCEDURE»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction) . Start the engine without operating the accelerator pedal and check that the MIL is not illuminated and that the idle speed is within the specified range when the air conditioning is switched off after the engine is warmed up. Standard Condition Engine Idle Speed A/C switched off 950 to 1050 RPM NOTE: If the accelerator pedal is operated, perform the above steps again. Be sure to perform this step with all accessories off. Make sure that park (P) is selected. Perform a road test and confirm that there are no abnormalities.

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1. PRECAUTION NOTE: After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notice before proceeding with work. Refer to «PRECAUTION»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction) .
2. REMOVE DECK BOARD ASSEMBLY . Refer to «REMOVAL - Step 1»(/toyota/prius-v/i-2011-2014/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
3. REMOVE NO. 1 DECK BOARD . Refer to «REMOVAL - Step 2»(/toyota/prius-v/i-2011-2014/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
4. REMOVE NO. 2 DECK BOARD . Refer to «REMOVAL - Step 3»(/toyota/prius-v/i-2011-2014/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
5. REMOVE REAR DECK FLOOR BOX . Refer to «REMOVAL - Step 4»(/toyota/prius-v/i-2011-2014/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
6. REMOVE DECK FLOOR BOX RH . Refer to «REMOVAL - Step 5»(/toyota/prius-v/i-2011-2014/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
7. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction__initialization) .
8. REMOVE INVERTER WITH CONVERTER ASSEMBLY Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/engine-control-systems/#hybrid-battery-control-system-service-information)
9. SEPARATE INVERTER RESERVE TANK ASSEMBLY Remove the 2 bolts and separate the inverter reserve tank assembly.
10. REMOVE ECM Remove the No. 1 relay block cover. Disconnect the 3 wire connectors. Disengage the 2 claws, push up the engine room wire harness and separate it from the engine room relay block. Disengage the 2 claws and push up the side cover to remove it. Loosen the bolt and separate the No. 2 engine room wire. Disconnect the 2 ECM connectors. Disconnect the 2 wire harness clamps. Push the locks on the 2 levers, then raise the levers, and disconnect the 2 ECM connectors. NOTE: After disconnecting the connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the connectors. Separate the 2 wire harness clamps. Remove the 2 bolts and ECM.

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1. INSTALL ECM Install the ECM with the 2 bolts. Torque: 13 N*m (133 kgf*cm, 10 ft.*lbf) Install the 2 wire harness clamps. Connect the 2 ECM connectors. Connect the 2 ECM connectors and lower the 2 levers. NOTE: When connecting the connectors, make sure that dirt, water or other foreign matter does not get caught between the connectors and other parts. Make sure that the 2 levers are securely locked. Install the 2 wire harness clamps. Install the No. 2 engine room wire with the bolt. Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf) Slide the side cover down and engage the 2 claws to install it. Slide the engine room wire harness down and engage the 2 claws to install it. Connect the 3 wire harness connectors. Install the No. 1 relay block cover.
2. INSTALL INVERTER RESERVE TANK ASSEMBLY Install the inverter reserve tank assembly with the 2 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
3. INSTALL INVERTER WITH CONVERTER ASSEMBLY Refer to «INSTALLATION»(/toyota/prius-v/i-2011-2014/remont/engine-control-systems/#hybrid-battery-control-system-service-information__installation)
4. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL
5. INSTALL DECK FLOOR BOX RH . Refer to «INSTALLATION - Step 55»(/toyota/prius-v/i-2011-2014/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
6. INSTALL REAR DECK FLOOR BOX . Refer to «INSTALLATION - Step 56»(/toyota/prius-v/i-2011-2014/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
7. INSTALL NO. 2 DECK BOARD . Refer to «INSTALLATION - Step 58»(/toyota/prius-v/i-2011-2014/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
8. INSTALL NO. 1 DECK BOARD . Refer to «INSTALLATION - Step 57»(/toyota/prius-v/i-2011-2014/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
9. INSTALL DECK BOARD ASSEMBLY . Refer to «INSTALLATION - Step 59»(/toyota/prius-v/i-2011-2014/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
10. PERFORM REGISTRATION NOTE: The Vehicle Identification Number (VIN) must be input into the replacement ECM. Refer to «REGISTRATION»(/toyota/prius-v/i-2011-2014/remont/testing-diagnostics/#engine-control-system-diagnostics-introduction__registration) .
11. PERFORM INITIALIZATION NOTE: Perform Initialization when replacing the ECM. See step 9 . When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction__initialization) .

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Note. Perform the mass air flow meter inspection in accordance with the following procedure. Replace the mass air flow meter only when foreign matter adheres to the sensor and the MAF value in the Data List (with the engine stopped) is not within the normal operating range.

1. INSPECT MASS AIR FLOW METER Read the values using the Techstream (MAF). NOTE: Perform the inspection with the vehicle indoors and on a level surface. Perform the inspection of the mass air flow meter while it is installed into the air cleaner case (installed on the vehicle). During the test, do not use an exhaust air duct on the exhaust pipe. Connect the Techstream to the DLC3. Turn the power switch on (IG) (do not run the engine). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / MAF. Wait 30 seconds, and read the values on the Techstream. Standard Condition Tester Display Condition Standard Condition MAF Engine not running 30 seconds after power switch is turned on (IG) 0.22 g/sec or less If the result is not as specified, replace the mass air flow meter. If the result is within the specified range, remove and inspect the mass air flow meter. Refer to «INSPECTION»(/toyota/prius-v/i-2011-2014/remont/testing-diagnostics/#engine-control-system-service-information) .

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1. REMOVE NO. 2 CYLINDER HEAD COVER
2. REMOVE MASS AIR FLOW METER Disconnect the mass air flow meter connector. Remove the 2 screws and mass air flow meter.

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1. INSPECT MASS AIR FLOW METER Perform a visual check for any foreign matter on the platinum hot wire (heater) of the mass air flow meter shown in the illustration. TEXT IN ILLUSTRATION *1 Platinum Hot Wire (Heater) Result There is no foreign matter. If the result is not as specified, replace the mass air flow meter. Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Mass Air Flow Meter Standard Resistance Tester Connection Condition Specified Condition 1 (THA) - 2 (E2) -20°C (-4°F) 13.6 to 18.4 kohms 20°C (68°F) 2.21 to 2.69 kohms 60°C (140°F) 0.49 to 0.67 kohms

1. INSTALL MASS AIR FLOW METER Install the mass air flow meter with the 2 screws. NOTE: Make sure that the O-ring is not cracked or does not jump out of position during installation. Connect the mass air flow meter connector.
2. INSTALL NO. 2 CYLINDER HEAD COVER

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REMOVAL

HINT

Although the part name refers to the No. 1 crank position sensor, this procedure is for the camshaft position sensor.

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1. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 22»(/toyota/prius-v/i-2011-2014/remont/mechanical/#engine-mechanical-service-information)
2. REMOVE NO. 1 CRANK POSITION SENSOR Disconnect the No. 1 crank position sensor connector. Remove the bolt and No. 1 crank position sensor.

HINT

Although the part name refers to the No. 1 crank position sensor, this procedure is for the camshaft position sensor.

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1. INSTALL NO. 1 CRANK POSITION SENSOR Apply a light coat of engine oil to the O-ring on the No. 1 crank position sensor. Install the No. 1 crank position sensor with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the No. 1 crank position sensor connector.
2. INSPECT FOR OIL LEAK
3. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 100»(/toyota/prius-v/i-2011-2014/remont/mechanical/#engine-mechanical-service-information)

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1. REMOVE REAR ENGINE UNDER COVER RH
2. REMOVE NO. 1 ENGINE UNDER COVER
3. REMOVE CRANK POSITION SENSOR Disconnect the crank position sensor connector. Remove the bolt and crank position sensor.

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1. INSPECT CRANK POSITION SENSOR Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Ohmmeter Standard Resistance Tester Connection Condition Specified Condition 1 - 2 -10 to 50°C (14 to 122°F) 1630 to 2740 ohms 50 to 100°C (122 to 212°F) 2065 to 3225 ohms

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1. INSTALL CRANK POSITION SENSOR Apply a light coat of engine oil to the O-ring on the crank position sensor. Install the crank position sensor with the bolt. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) Connect the crank position sensor connector.
2. INSPECT FOR OIL LEAK
3. INSTALL NO. 1 ENGINE UNDER COVER
4. INSTALL REAR ENGINE UNDER COVER RH

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1. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/wiperwasher-systems/#wiper-system-washer-system-service-information)
2. REMOVE COWL BODY MOUNTING REINFORCEMENT LH . Refer to «REMOVAL - Step 5»(/toyota/prius-v/i-2011-2014/remont/mechanical-hydraulic/#brake-system-hydraulic-service-information)
3. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY . Refer to «REMOVAL - Step 6»(/toyota/prius-v/i-2011-2014/remont/mechanical-hydraulic/#brake-system-hydraulic-service-information)
4. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 22»(/toyota/prius-v/i-2011-2014/remont/mechanical/#engine-mechanical-service-information)
5. REMOVE IGNITION COIL ASSEMBLY Disconnect the 4 ignition coil connectors. Remove the 4 bolts and 4 ignition coils. NOTE: When removing each ignition coil, do not damage the plug cap on the engine head cover opening or the upper edge of the spark plug tube.
6. REMOVE SPARK PLUG Using a 14 mm spark plug wrench, remove the 4 spark plugs.

1. INSTALL SPARK PLUG Using a 14 mm spark plug wrench, install the 4 spark plugs. Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf)
2. INSTALL IGNITION COIL ASSEMBLY Install the 4 ignition coils with the 4 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) NOTE: When installing each ignition coil, do not damage the plug cap on the engine head cover opening or the upper edge of the spark plug tube. Connect the 4 ignition coil connectors.
3. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 100»(/toyota/prius-v/i-2011-2014/remont/mechanical/#engine-mechanical-service-information)
4. INSTALL OUTER COWL TOP PANEL SUB-ASSEMBLY . Refer to «INSTALLATION - Step 15»(/toyota/prius-v/i-2011-2014/remont/mechanical-hydraulic/#brake-system-hydraulic-service-information)
5. INSTALL COWL BODY MOUNTING REINFORCEMENT LH . Refer to «INSTALLATION - Step 16»(/toyota/prius-v/i-2011-2014/remont/mechanical-hydraulic/#brake-system-hydraulic-service-information)
6. INSTALL WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY Refer to «INSTALLATION»(/toyota/prius-v/i-2011-2014/remont/wiperwasher-systems/#wiper-system-washer-system-service-information__installation)

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1. DISCHARGE FUEL SYSTEM PRESSURE Refer to «PRECAUTION»(/toyota/prius-v/i-2011-2014/remont/fuel-system/#fuel-system-inspection)
2. REMOVE FUEL INJECTOR ASSEMBLY Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/fuel-system/#fuel-system-service-information)
3. SEPARATE INVERTER RESERVE TANK ASSEMBLY See step 9
4. REMOVE ENGINE COOLANT TEMPERATURE SENSOR Disconnect the engine coolant temperature sensor connector. Using SST, remove the engine coolant temperature sensor and gasket. SST: 09205-76030

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1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 Approximately 20°C (68°F) 2.32 to 2.59 kohms Approximately 80°C (176°F) 0.310 to 0.326 kohms NOTE: When checking the engine coolant temperature sensor in water, keep the terminals dry. After the check, dry the sensor. If the resistance is not as specified, replace the engine coolant temperature sensor.

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1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR Install the engine coolant temperature sensor through a new gasket. TEXT IN ILLUSTRATION *a Fulcrum Length 25 mm *b Fulcrum Length 180 mm SST: 09205-76030 without SST Torque: 20 N*m (200 kgf*cm, 14 ft.*lbf) with SST Torque: 17 N*m (175 kgf*cm, 13 ft.*lbf) NOTE: The "with SST" torque value is effective when using SST with a fulcrum length of 25 mm (0.984 in.) and a torque wrench with a fulcrum length of 180 mm (7.09 in.). Refer to «PRECAUTION»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction) . The "with SST" torque value is effective when SST is parallel to the torque wrench. Connect the engine coolant temperature sensor connector.
2. INSTALL INVERTER RESERVE TANK ASSEMBLY See step 2
3. INSTALL FUEL INJECTOR ASSEMBLY Refer to «INSTALLATION»(/toyota/prius-v/i-2011-2014/remont/fuel-system/#fuel-system-service-information__installation)

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1. REMOVE INTAKE MANIFOLD Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/exhaust/#exhaust-system-service-information)
2. REMOVE KNOCK SENSOR Disconnect the knock sensor connector. Remove the bolt and knock sensor.

INSPECTION

1. INSPECT KNOCK SENSOR Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 120 to 280 kohms If the result is not as specified, replace the knock sensor.

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1. INSTALL KNOCK SENSOR Install the knock sensor with the bolt as shown in the illustration. TEXT IN ILLUSTRATION *a Front of Engine *b 20° Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) NOTE: Make sure that the knock control sensor is in the correct position. Connect the knock sensor connector.
2. INSTALL INTAKE MANIFOLD Refer to «INSTALLATION»(/toyota/prius-v/i-2011-2014/remont/exhaust/#exhaust-system-service-information__installation)

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1. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/wiperwasher-systems/#wiper-system-washer-system-service-information)
2. REMOVE COWL BODY MOUNTING REINFORCEMENT LH . Refer to «REMOVAL - Step 5»(/toyota/prius-v/i-2011-2014/remont/mechanical-hydraulic/#brake-system-hydraulic-service-information)
3. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY . Refer to «REMOVAL - Step 6»(/toyota/prius-v/i-2011-2014/remont/mechanical-hydraulic/#brake-system-hydraulic-service-information)
4. REMOVE NO. 2 CYLINDER HEAD COVER . Refer to «REMOVAL - Step 22»(/toyota/prius-v/i-2011-2014/remont/mechanical/#engine-mechanical-service-information)
5. REMOVE AIR FUEL RATIO SENSOR Disconnect the air fuel ratio sensor connector and clamp. Using SST, remove the air fuel ratio sensor. SST: 09224-00010

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1. INSPECT AIR FUEL RATIO SENSOR Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *a Component without harness connected (Air Fuel Ratio Sensor) Standard Resistance Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.6 to 3.2 ohms 1 (HA1A) - 4 (A1A-) - 10 kohms or higher If the result is not as specified, replace the air fuel ratio sensor.

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1. INSTALL AIR FUEL RATIO SENSOR Using SST, install the air fuel ratio sensor. TEXT IN ILLUSTRATION *a Fulcrum Length 30 mm *b Fulcrum Length 300 mm SST: 09224-00010 without SST Torque: 44 N*m (449 kgf*cm, 32 ft.*lbf) with SST Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) NOTE: The "with SST" torque value is effective when using SST with a fulcrum length of 30 mm (1.18 in.) and a torque wrench with a fulcrum length of 300 mm (11.8 in.). Refer to «PRECAUTION»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction) . The "with SST" torque value is effective when SST is parallel to the torque wrench. Connect the air fuel ratio sensor connector and clamp.
2. INSTALL NO. 2 CYLINDER HEAD COVER . Refer to «INSTALLATION - Step 100»(/toyota/prius-v/i-2011-2014/remont/mechanical/#engine-mechanical-service-information)
3. INSPECT FOR EXHAUST GAS LEAK
4. INSTALL OUTER COWL TOP PANEL SUB-ASSEMBLY . Refer to «INSTALLATION - Step 15»(/toyota/prius-v/i-2011-2014/remont/mechanical-hydraulic/#brake-system-hydraulic-service-information)
5. INSTALL COWL BODY MOUNTING REINFORCEMENT LH . Refer to «INSTALLATION - Step 16»(/toyota/prius-v/i-2011-2014/remont/mechanical-hydraulic/#brake-system-hydraulic-service-information)
6. INSTALL WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY Refer to «INSTALLATION»(/toyota/prius-v/i-2011-2014/remont/wiperwasher-systems/#wiper-system-washer-system-service-information__installation)

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1. REMOVE FRONT NO. 3 ENGINE UNDER COVER Remove the 4 clips and front No. 3 engine under cover.
2. REMOVE HEATED OXYGEN SENSOR Disconnect the heated oxygen sensor connector. Remove the wire harness bracket. Remove the bolt and separate the wire harness clamp bracket. Disconnect the wire harness to remove the wire harness clamp bracket. Using SST, remove the heated oxygen sensor. SST: 09224-00010

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1. INSPECT HEATED OXYGEN SENSOR TEXT IN ILLUSTRATION *a Component without harness connected (Heated Oxygen Sensor) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HT1B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT1B) - 4 (E2) - 10 kohms or higher If the result is not as specified, replace the heated oxygen sensor.

Scheme 257

1. INSTALL HEATED OXYGEN SENSOR Using SST, install the heated oxygen sensor onto the front exhaust pipe. TEXT IN ILLUSTRATION *a Fulcrum Length 30 mm *b Fulcrum Length 300 mm SST: 09224-00010 without SST Torque: 44 N*m (449 kgf*cm, 32 ft.*lbf) with SST Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) NOTE: The "with SST" torque value is effective when using SST with a fulcrum length of 30 mm (1.18 in.) and a torque wrench with a fulcrum length of 300 mm (11.8 in.). Refer to «PRECAUTION»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction) . The "with SST" torque value is effective when SST is parallel to the torque wrench. Connect the wire harness to install the wire harness clamp bracket. Install the wire harness clamp bracket with the bolt. Torque: 13 N*m (127 kgf*cm, 9 ft.*lbf) Install the wire harness bracket. Connect the heated oxygen sensor connector.
2. INSPECT FOR EXHAUST GAS LEAK
3. INSTALL FRONT NO. 3 ENGINE UNDER COVER Install the front No. 3 engine under cover with the 4 clips.

Scheme 258

Scheme 259

Scheme 260

1. REMOVE NO. 1 RELAY BLOCK COVER
2. REMOVE NO. 2 INTEGRATION RELAY Using a screwdriver with its tip wrapped in protective tape, disengage the 2 claws and disconnect the No. 2 integration relay. Disconnect the 3 connectors and remove the No. 2 integration relay.

Scheme 261

Scheme 262

1. INSPECT NO. 2 INTEGRATION RELAY TEXT IN ILLUSTRATION *1 No. 2 Integration Relay - - IG2 RELAY: Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 No. 2 Integration Relay Standard Resistance Tester Connection Condition Specified Condition No. 2 Integration Relay (1C-1) - No. 2 Integration Relay (1A-4) Auxiliary battery voltage is not applied between terminals 1A-3 and 1A-2 10 kohms or higher No. 2 Integration Relay (1C-1) - No. 2 Integration Relay (1A-4) Auxiliary battery voltage is applied between terminals 1A-3 and 1A-2 Below 1 ohms If the resistance is not as specified, replace the No. 2 integration relay. BATT FAN RELAY: Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 No. 2 Integration Relay Standard Resistance Tester Connection Condition Specified Condition No. 2 Integration Relay (1C-1) - No. 2 Integration Relay (1A-8) Auxiliary battery voltage is not applied between terminals 1A-7 and 1A-6 10 kohms or higher No. 2 Integration Relay (1C-1) - No. 2 Integration Relay (1A-8) Auxiliary battery voltage is applied between terminals 1A-7 and 1A-6 Below 1 ohms If the resistance is not as specified, replace the No. 2 integration relay. EFI MAIN RELAY: Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 No. 2 Integration Relay Standard Resistance Tester Connection Condition Specified Condition No. 2 Integration Relay (1C-1) - No. 2 Integration Relay (1B-4) Auxiliary battery voltage is not applied between terminals 1B-2 and 1B-3 10 kohms or higher No. 2 Integration Relay (1C-1) - No. 2 Integration Relay (1B-4) Auxiliary battery voltage is applied between terminals 1B-2 and 1B-3 Below 1 ohms If the resistance is not as specified, replace the No. 2 integration relay. C/OPN RELAY: Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Integration Relay Standard Resistance Tester Connection Condition Specified Condition No. 2 Integration Relay (1B-5) - No. 2 Integration Relay (1B-8) Auxiliary battery voltage is not applied between terminals 1B-6 and 1B-7 10 kohms or higher No. 2 Integration Relay (1B-5) - No. 2 Integration Relay (1B-8) Auxiliary battery voltage is applied between terminals 1B-6 and 1B-7 Below 1 ohms If the resistance is not as specified, replace the No. 2 integration relay.

Scheme 263

1. INSTALL NO. 2 INTEGRATION RELAY Connect the 3 connectors. Attach the No. 2 integration relay to the engine room relay block.
2. INSTALL NO. 1 RELAY BLOCK COVER

See also:
• INSPECTION MODE PROCEDURE
• REMOVAL - Step 22
• REPLACEMENT - Step 1
• ON-VEHICLE INSPECTION - Step 1
• DTC CHECK / CLEAR
• REMOVAL - Step 1
• INITIALIZATION
• REMOVAL
• INSTALLATION
• REGISTRATION
• REMOVAL
• REMOVAL - Step 5
• INSTALLATION
• PRECAUTION
• REMOVAL
• INSTALLATION
• REMOVAL
• INSTALLATION
• INSPECTION